Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4432aaaa68e3a287697386cfc1850c8879c4aba1a4bda7afe2c5b55343345919' 
  AND token = 'KZFdyVYvEWLtF8BJrEk8qYyScjpaPTv6B2FVHrV0bII=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}